mofa-frame

name	mofa-frame
version	0.1.0
description	Extract a video frame at a specific timestamp. Triggers: extract frame, 提取画面, screenshot video, capture frame, 截图, grab frame, video frame at, 视频截图.
requires_bins	ffmpeg
requires_env	null

mofa-frame

Extracts a single frame from a video at a specific timestamp. Returns the frame as a PNG image.

Usage

Use after mofa_youtube — read the transcript, identify interesting moments, then extract frames at those timestamps.

mofa frame --video-path ./video.mp4 --timestamp 120 --label "key diagram"

Workflow

1. mofa_youtube downloads video + transcribes → returns transcript.md + video path
2. Agent reads transcript, identifies key moments with timestamps
3. Agent calls mofa_frame for each interesting timestamp
4. Each frame is delivered to chat

Output

Single PNG file, resized to 800px wide. Filename includes timestamp and optional label.